Results 51 to 60 of about 1,104,915 (315)

The Antarctic stratospheric nitrogen hole: Southern Hemisphere and Antarctic springtime total nitrogen dioxide and total ozone variability as observed by Sentinel-5p TROPOMI [PDF]

Atmospheric Chemistry and Physics
Denitrification within the stratospheric vortex is a crucial process for Antarctic ozone hole formation, resulting in an analogous stratospheric “nitrogen hole”.
A. de Laat, J. van Geffen, P. Stammes, R. van der A, H. Eskes, J. P. Veefkind   +5 more
doaj   +1 more source

The Antarctic Ozone Hole: An Update [PDF]

, 2014
The stratospheric ozone hole, an annual occurrence during austral spring, is caused by heterogeneous conversion of hydrogen chloride and chlorine nitrate to chlorine radicals. These reactions take place of polar stratospheric cloud particles in the cold,
Anne R. Douglass, Benedick R. E., Paul A. Newman, Solomon S., Strahan S. E., Susan Solomon   +5 more
core   +2 more sources

The Chemical Effect of Increased Water Vapor From the Hunga Tonga‐Hunga Ha'apai Eruption on the Antarctic Ozone Hole

Geophysical Research Letters
The eruption of the Hunga Tonga‐Hunga Ha'apai volcano on 15 January 2022 was one of the most explosive eruptions of the last decades. The amount of water vapor injected into the stratosphere was unprecedented in the observational record, increasing the ...
I. Wohltmann, M. Santee, G. Manney, L. Millán   +3 more
semanticscholar   +1 more source

First description and classification of the ozone hole over the Arctic in boreal spring 2020

, 2020
. Ozone data derived from the TROPOMI sensor onboard the Sentinel-5 Precursor satellite are showing an atypical ozone hole feature in the polar region of the Northern hemisphere (Arctic) in spring 2020.
M. Dameris, D. Loyola, M. Nützel, M. Coldewey‐Egbers, C. Lerot, F. Romahn, M. Van Roozendael   +6 more
semanticscholar   +1 more source

Quantifying the contribution of transport to Antarctic springtime ozone column variability [PDF]

Atmospheric Chemistry and Physics
Quantifying chemical and dynamical drivers of Antarctic ozone variability remains important as stratospheric chlorine levels gradually reduce and the ozone hole recovers in response. While chemistry dominates the formation of the ozone hole in September,
H. E. Kessenich, A. Seppälä, D. Smale, C. J. Rodger, M. Weber   +4 more
doaj   +1 more source

Effects of atmospheric sphericity on stratospheric chemistry and dynamics over Antarctica [PDF]

, 2005
Atmospheric sphericity is an important factor that must be considered in order to evaluate an accurate ozone loss rate in the polar stratosphere. The built-in plane-parallel radiative transfer scheme of a nudging chemical transport model (CTM) and an ...
Akiyoshi, Akiyoshi, Akiyoshi, Akiyoshi, Allen, Balluch, Chipperfield, Dahlback, Dvortsov, Fahey, Herman, Hideaki Nakane, Hideharu Akiyoshi, Hirohiko Masunaga, Jun-ichi Kurokawa, Kylling, Lamago, Landgraf, Lary, Lary, Lary, Lary, Levy, Masaaki Takahashi, Minschwaner, Müller, Nagashima, Nakajima, Nakajima, Numaguti, Numaguti, Numaguti, Perner, Rattigan, Rees, Röth, Röth, Swartz, Takigawa, Tatsuya Nagashima, Teruyuki Nakajima, Trentmann, Uhl, World Meteorological Organization   +43 more
core   +2 more sources

Ozone hole?

Eos, Transactions American Geophysical Union, 1994
Evidence for long‐term global ozone depletion due to CFCs is still lacking, according to University of Virginia (UVA) scientists, who recently poked a hole in a paper published last November in Science by researchers from the Canadian Atmospheric Environment Service.
openaire   +1 more source

Unfinished business after five decades of ozone-layer science and policy

Nature Communications, 2020
The Montreal Protocol has begun to heal the Antarctic ozone hole and avoided more global warming than any other treaty. Still, recent research shows that new unexpected emissions of several chlorofluorocarbons, carbon tetrachloride, and ...
Susan Solomon, Joseph Alcamo, A. R. Ravishankara   +2 more
doaj   +1 more source

Emergence of healing in the Antarctic ozone layer [PDF]

, 2016
Industrial chlorofluorocarbons that cause ozone depletion have been phased out under the Montreal Protocol. A chemically driven increase in polar ozone (or “healing”) is expected in response to this historic agreement. Observations and model calculations
Ivy, DJ, Kinnison, D, Mills, MJ, Neely III, RR, Schmidt, A, Solomon, S   +5 more
core   +5 more sources

Is the Ozone Hole Over Your Classroom? [PDF]

, 2002
First year university science students are surveyed about their understanding of the ozone layer, ozone depletion and the effect of ozone depletion on Australia.
Cordero, Eugene
core   +1 more source